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Reference Detail
| Reference | ||
|---|---|---|
| Author | Liu X., Xie Z., Xin J., Yuan S., Liu S., Sun Y., Zhang Y., Jin C. | |
| Title | OsbZIP18 Is a Positive Regulator of Phenylpropanoid and Flavonoid Biosynthesis under UV-B Radiation in Rice. | |
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Abstract: In plants exposed to ultraviolet B radiation (UV-B; 280-315 nm), metabolic responses are activated, which reduce the damage caused by UV-B. Although several metabolites responding to UV-B stress have been identified in plants, the accumulation of these metabolites at different time points under UV-B stress remains largely unclear, and the transcription factors regulating these metabolites have not been well characterized. Here, we explored the changes in metabolites in rice after UV-B treatment for 0 h, 6 h, 12 h, and 24 h and identified six patterns of metabolic change. We show that the rice transcription factor OsbZIP18 plays an important role in regulating phenylpropanoid and flavonoid biosynthesis under UV-B stress in rice. Metabolic profiling revealed that the contents of phenylpropanoid and flavonoid were significantly reduced in <i>OsbZIP18</i> mutants compared with the wild-type plants (WT) under UV-B stress. Further analysis showed that the expression of many genes involved in the phenylpropanoid and flavonoid biosynthesis pathways was lower in <i>OsbZIP18</i> mutants than in WT plants, including <i>OsPAL5</i>, <i>OsC4H</i>, <i>Os4CL</i>, <i>OsCHS</i>, <i>OsCHIL2</i>, and <i>OsF3H.</i> Electrophoretic mobility shift assays (EMSA) revealed that OsbZIP18 bind to the promoters of these genes, suggesting that OsbZIP18 function is an important positive regulator of phenylpropanoid and flavonoid biosynthesis under UV-B stress. In conclusion, our findings revealed that OsbZIP18 is an essential regulator for phenylpropanoid and flavonoid biosynthesis and plays a crucial role in regulating UV-B stress responses in rice. |
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| Journal | Plants (Basel) | |
| Country | China | |
| Volume | 13(4) | |
| Pages | ||
| Year | 2024 | |
| PubMed ID | 38502046 | |
| PubMed Central ID | 10893026 | |
| DOI | 10.3390/plants13040498 | |
| URL | - | |
| Relation | ||
| Gene | 2ODD2 BZIP18 C4H2 CHI7 CHS _ | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
